docs: def _deserialize_audience(audience_map):
      """ Helper method to de-serialize and populate audience map with the condition list and structure.
  
      Args:
        audience_map: Dict mapping audience ID to audience object.
  
      Returns:
        Dict additionally consisting of condition list and structure on every audience object.
      """
  
      for audience in audience_map.values():
        condition_structure, condition_list = condition_helper.loads(audience.conditions)
        audience.__dict__.update({
          'conditionStructure': condition_structure,
          'conditionList': condition_list
        })
  
      return audience_map